US3171485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic chemical injection system for wells
Assignee: Champion Chemicals Inc
•
Filing: 1962-07-13
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Granted: 1965-03-02
•
Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jr William S White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:33
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A SYSTEM FOR INJECTING CHEMICALS INTO A WELL HAVING (A) A CASING, (B) A PRODUCTION STRING TELESCOPED WITHIN THE CASING, AND (C) A PRODUCTION PIPE LEADING FROM THE PRODUCTION STRING TO A PLACE OF STORAGE; THE IMPROVEMENT COMPRISING: (D) A CHEMICAL PIPE LEADING FROM THE PRODUCTION STRING INTO THE CASING, (E) A VALVE IN THE CHEMICAL PIPE, (F) A CHEMICAL STORAGE MEANS, (G) A PUMP INTERCONNECTING THE CHEMICAL STORAGE MEANS TO THE CHEMICAL PIPE, (H) A VALVE MOTOR CONNECTED TO THE VALVE, (I) A PUMP MOTOR CONNECTED TO THE PUMP, (J) A COMMON POWER SOURCE, (K) A CLOCK MEANS FOR PERIODICALLY CONNECTING AND DISCONNECTING THE COMMON POWER SOURCE TO BOTH SAID MOTORS, AND
Claim 2
Dependent Claim
114 words
IN A SYSTEM FOR INJECTING CHEMICALS INTO A WELL HAVING (A) A CASING, (B) A PRODUCTION STRING TELESCOPED WITHIN THE CASING, AND (C) A PRODUCTION PIPE LEADING FROM THE PRODUCTION STRING TO A PLACE OF STORAGE; THE IMPROVEMENT COMPRISING: (D) A CHEMICAL PIPE LEADING FROM THE PRODUCTION STRING INTO THE CASING, (E) A VALVE IN THE CHEMICAL PIPE, (F) A CHEMICAL STORAGE MEANS, (G) A PUMP INTERCONNECTING THE CHEMICAL STORAGE MEANS TO THE CHEMICAL PIPE, (H) A VALVE MOTOR CONNECTED TO THE VALVE, (I) A PUMP MOTOR CONNECTED TO THE PUMP, (J) A COMMON POWER SOURCE, (K) A CLOCK MEANS FOR PERIODICALLY CONNECTING AND DISCONNECTING THE COMMON POWER SOURCE TO BOTH SAID MOTORS, AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |